Summary
In this chapter, we covered both foundational and advanced database concepts essential for data engineers. We explored different types of databases, normalization, indexing, NoSQL databases, OLTP/OLAP systems, and triggers. Additionally, we provided technical interview questions to test your knowledge and problem-solving skills.
In the next chapter, we will dive into essential SQL for data engineers, focusing on the indispensable SQL skills required for efficient data manipulation and management within databases. Let’s continue our journey by mastering essential SQL techniques for data engineering.